package org.apache.maven.plugin;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.util.ArrayList;
import java.util.List;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.plugin.descriptor.PluginDescriptor;

public class MavenPluginValidator {
  private final Artifact pluginArtifact;

  private List<String> errors = new ArrayList<String>();

  private boolean firstDescriptor = true;

  public MavenPluginValidator(Artifact pluginArtifact) {
    this.pluginArtifact = pluginArtifact;
  }

  public void validate(PluginDescriptor pluginDescriptor) {
    /*
     * NOTE: For plugins that depend on other plugin artifacts the plugin realm contains more than
     * one plugin descriptor. However, only the first descriptor is of interest.
     */
    if (!firstDescriptor) {
      return;
    }
    firstDescriptor = false;

    if (!pluginArtifact.getGroupId().equals(pluginDescriptor.getGroupId())) {
      errors.add("Plugin's descriptor contains the wrong group ID: " + pluginDescriptor.getGroupId());
    }

    if (!pluginArtifact.getArtifactId().equals(pluginDescriptor.getArtifactId())) {
      errors.add("Plugin's descriptor contains the wrong artifact ID: " + pluginDescriptor.getArtifactId());
    }

    if (!pluginArtifact.getBaseVersion().equals(pluginDescriptor.getVersion())) {
      errors.add("Plugin's descriptor contains the wrong version: " + pluginDescriptor.getVersion());
    }
  }

  public boolean hasErrors() {
    return !errors.isEmpty();
  }

  public List<String> getErrors() {
    return errors;
  }
}
